6PQZV26B

Wheat

Variety Description

Variety used for comparison: '25R40'

Summary: At booting, '6PQZV26B' has a very high frequency of plants with recurved flag leaves while '25R40' has a medium frequency of plants with recurved flag leaves. The flag leaf sheath of '6PQZV26B' has a weak degree of glaucosity while that of '25R40' has an absent or very weak degree of glaucosity. At heading, the spike of '6PQZV26B' has a weak degree of glaucosity whereas the spike of '25R40' has a strong degree of glaucosity. The spike of '6PQZV26B' is fusiform in profile whereas the spike of '25R40' is parallel sided in profile. The spike of '6PQZV26B' is of a medium density whereas that of '25R40' is dense. The spike, excluding the awns, of '6PQZV26B' is longer than that of '25R40'. At maturity, the culm neck of '6PQZV26B' is straight while that of '25R40' is curved.

Description:

PLANT: common wheat, winter type, semi-erect growth habit at 5 to 9 tiller stage, very high frequency of plants with recurved flag leaves, heads emerge late in the season

SEEDLING (4 LEAF STAGE): glabrous sheath and blade of lower leaves

FLAG LEAF: very strong intensity of anthocyanin colouration of auricles, weak glaucosity of sheath, glabrous blade and sheath

CULM NECK: medium degree of glaucosity at heading, straight
STRAW (AT MATURITY): thin pith in cross-section

SPIKE: weak glaucosity at heading, fusiform shape in profile, medium density, coloured at maturity, inclined attitude
AWNS: equal to spike length, brown at maturity
LOWER GLUME: medium length and width, glabrous, sparse internal hair
LOWER GLUME SHOULDER: narrow, slightly sloping
LOWER GLUME BEAK: short, slightly curved shape
LOWEST LEMMA: slightly curved beak

KERNEL: soft red type, medium red, large, medium length, narrow, elliptical, rounded cheek, medium length brush hairs, narrow crease of medium depth
GERM: medium size, broad elliptical

Origin & Breeding History: '6PQZV26B' (experimental designation 25R28) was developed using the pedigree method of plant breeding. The variety resulted from a three way cross between a proprietary line, and the varieties '25R37' and '25R47' conducted at Pioneer Hi-Bred International, Inc. in Windfall, Indiana, USA in 2008. The variety was advanced in Windfall, Indiana based on grain yield, test weight, maturity, disease resistance, plant type, plant height, head type, straw strength as well as milling and baking characteristics with one F7 line designated as 25R28 in 2015. Breeder seed was established at the F10 generation in 2020.

Tests & Trials: The comparative trial for '6PQZV26B' was conducted at Pioneer Hi-Bred Production Limited in Caledon, Ontario during the 2021 growing season. There were 3 replicates arranged in an RCB design. Each plot consisted of 6 rows, each row measuring 3.2 metres long, with an inter-row spacing of 30 cm. The planting density resulted in 7800 plants per variety. Measured characteristics were based on 24 measurements per variety. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test. Results were supported by the official technical examination report 202100023, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison table for '6PQZV26B' with reference variety '25R40'

Spike length (excluding awns) (cm)

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Wheat: '6PQZV26B' (bottom) with reference variety '25R40' (top)

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Wheat: '6PQZV26B' (left) with reference variety '25R40' (right)